Madera County — Historic Preservation

Last reviewed: July 6, 2026

Overview

This page explains what the Madera County zoning/planning ordinance (Title 18) does—and does not—say about historic preservation in the unincorporated areas. Title 18 enumerates overlay districts and development procedures but does not create a local historic landmark program or a historic district overlay. The only codified tool that indirectly protects scenic and cultural character is the county’s Scenic Highway Overlayed District (SHO), plus general permit/condition powers that can shape architectural treatment on a case-by-case basis in unincorporated Madera County.

Bottom line: The zoning code for unincorporated Madera County contains no local “historic district” or “landmark” procedures; most preservation-adjacent review happens only if your parcel lies in the SHO or through permit conditions the County can place on a project.

To orient yourself, start with the Madera County zoning & planning overview and Madera County Zoning. Where this page mentions related topics like development standards, parking, design review, overlay districts, and signage, follow those links for deeper context.

What Title 18 provides (and what it does not)

• The zoning code lists overlay districts—including SHO (Scenic Highway), AAO (Airport/Airspace), and MHA (Manufactured Housing Architectural Review)—but not a “Historic Preservation” overlay.
• The overlay framework states where extra regulations apply and relies on the official zoning map to determine locations in unincorporated areas.
• The SHO limits certain uses and signs along designated scenic highway corridors, helping conserve corridor character.
• The County can attach project-specific conditions through the zoning permit process—including architectural and landscape treatment—offering the most common path to address context-sensitive or preservation-adjacent concerns.
• There is no local “historic landmark” registry, “certificate of appropriateness,” or demolition-review procedure in Title 18. Not found in retrieved materials.

District-by-district breakdown (overlays with preservation-adjacent effects)

SHO — Scenic Highway Overlayed District

• Purpose and where it applies: Applies to mapped scenic highway corridors in the unincorporated areas; boundaries are shown on the official zoning maps.
• Typical permitted uses: Any use permitted in the underlying zone, except as limited below.
• Key restrictions and standards:
  • Prohibits new signs within 660 feet of the right-of-way edge of any road in the overlay, other than owner/address identification.
  • Prohibits commercial and industrial uses, wrecking yards, and refuse disposal sites within the overlay.
  • Structure location, height, lot dimensions, and parking default to the underlying district unless such standards would “preclude the purposes” of the SHO.
• How it functions: The SHO is the closest thing the zoning code has to a corridor-character conservation tool. It is not a “historic” overlay but can help safeguard scenic and cultural landscape qualities along designated routes in the unincorporated areas.

MHA — Manufactured Housing Architectural Review Overlayed District

• Purpose and where it applies: Adds architectural standards for manufactured housing within specified subdivisions in the unincorporated areas (e.g., Bass Lake Annex, Bonadelle Ranchos, Cascadel Woods, etc.).
• Typical permitted uses: Same as the underlying district; the overlay imposes manufactured-home design standards (not a historic-preservation program).
• Key dimensional/design standards:
  • Minimum 12-inch roof overhang; minimum 20-foot width; off-street parking as required by Chapter 18.102.
  • Setbacks, height, lot dimensions follow the underlying zone.
• Note: This overlay is about architectural compatibility for manufactured homes in named tracts, not about historic designation.

AAO — Airport/Airspace Overlayed District

• Purpose and where it applies: Protects air navigation safety; can indirectly constrain project height or placement that might affect older structures in unincorporated areas near airfields.
• Typical permitted uses: Uses allowed in the underlying zone, minus uses that create glare, smoke, dust, radio interference, or exceed airspace height limits.
• Key dimensional standards:
  • Prohibits residential structures within 100 feet of the projected centerline of instrumented runways for one mile from each end.
  • Limits building/tree height per mapped airspace surfaces.
• Note: This is not a preservation overlay but can affect work on older or potentially historic structures within its mapped area.

Decision-relevant summary table

How preservation-adjacent review actually happens

• Overlays: If your property lies in the SHO, corridor protections limit signs and certain uses; dimensional standards default to the base zone unless they would undermine the overlay’s purpose. Map location controls applicability in unincorporated areas.
• Zoning permits and conditions: When a use requires a zoning permit, the County can require plans and may condition approval for architectural/landscape compatibility, planting screens, and operational controls—often the only forum to address context compatible design if a resource is locally valued but not formally designated.
• Base compliance: All projects must comply with base-zone rules plus any applicable overlays and other specific regulations listed in Title 18.
• ADUs on historic properties: State law allows ADUs in historic districts, with local agencies limited to applying objective standards that prevent adverse impacts on resources listed in the California Register; the County’s zoning must harmonize with that state framework. See California ADU law for state rules summarized by HCD.

Checklist

• Confirm your parcel is in the unincorporated area and identify the base zone in the official maps; note any overlays like SHO, AAO, or MHA.
• If in the SHO, plan for use/signage limits within the corridor and verify that any signage concept steers clear of the 660‑foot restriction.
• If your proposal needs a zoning permit or CUP, prepare plans showing architectural and landscape treatment; expect compatibility conditions.
• If strict standards create practical hardship (e.g., due to an older structure’s siting), evaluate a variance strategy.
• Cross-check base development standards and parking to ensure full compliance.
• If adding an ADU to a potentially historic resource, align with state rules and objective standards that avoid adverse impacts to listed resources. See California ADU law.
• If your project includes manufactured housing in a listed subdivision, meet MHA overlay standards (overhang, width, parking).

Risks & Ambiguities

Information Gaps

• Local historic landmark register or designation procedures: Not found in retrieved materials.
• Historic district overlay, certificate of appropriateness, or demolition review procedures: Not found in retrieved materials.
• A dedicated Title 18 chapter on historic preservation: Not found in retrieved materials.
• If building-code alternatives for historic resources will apply, coordinate separately under the California Building Standards Code (zoning does not govern those). Verify with the jurisdiction.

Plain-English Summary

In unincorporated Madera County, there is no local “historic district” or “landmark” process in the zoning code. The main tool that protects corridor character is the Scenic Highway Overlay, which restricts signs and certain uses near designated routes; otherwise, preservation-sensitive outcomes typically come through case-by-case permit conditions on architecture and landscaping.

Source References

• Title 18 lists overlay districts including SHO, AAO, MHA; official zoning maps govern applicability: § 18.08.010, § 18.08.020.
• Overlay framework—purpose, creation, mapping: § 18.76.010–18.76.040.
• Scenic Highway Overlayed District—uses, signs, structure location/height/lot/parking: § 18.80.010–18.80.050.
• Manufactured Housing Architectural Review Overlayed District—standards and subdivisions: § 18.84.010, § 18.84.060.
• Airport/Airspace Overlayed District—use/height/location limits: § 18.78.010–18.78.030.
• Zoning permit conditions; architectural/landscape compatibility: § 18.104.040–18.104.050.
• Variances—purpose, findings, process: § 18.106.010–18.106.050.
• Base compliance with overlay regulations and other standards: § 18.02.040(C).
• State ADU guidance on historic resources (summary reference): 2025 HCD Handbook.

Retrieved passages

• Madera County Zoning Code (§ 1) High relevance show source text
• Madera County Zoning Code (title shall) High relevance show source text
• Madera County Zoning Code (Chapter 18.106) High relevance show source text
• Madera County Zoning Code (Chapter 18.106.) High relevance show source text
• Madera County Zoning Code (§ 1) High relevance show source text
• Madera County Zoning Code (§ 1) Medium relevance show source text
• Madera County Zoning Code (§ 65915) Medium relevance show source text
• Madera County Zoning Code Medium relevance show source text
• Madera County Zoning Code (§ 1) Medium relevance show source text
• Madera County Zoning Code (Section 18.108.050) Medium relevance show source text
• CBC § 18955 (Section 18955) Medium relevance show source text
• Madera County Zoning Code (§ 1) Medium relevance show source text
• Madera County Zoning Code (Chapter 18.102.) Medium relevance show source text
• Madera County Zoning Code (Chapter 18.108) Medium relevance show source text
• Madera County Zoning Code (§ 11) Medium relevance show source text
• Madera County Zoning Code (§ 20) Medium relevance show source text
• Madera County Zoning Code (§ 1) Medium relevance show source text
• Madera County Zoning Code (§ 1) Medium relevance show source text
• Madera County Zoning Code (§ 21) Medium relevance show source text
• Madera County Zoning Code (§ 18) Medium relevance show source text
• Madera County Zoning Code (Section 18.108.050) Medium relevance show source text
• Madera County Zoning Code (§ 66314) Medium relevance show source text
• Madera County Zoning Code (§ 1) Medium relevance show source text
• CBC § 18954 (Section 18954) Medium relevance show source text

Cited sections

• Title 18 lists overlay districts including **SHO**, **AAO**, **MHA**; official zoning maps govern applicability: **§ 18.08.010**, **§ 18.08.020**. (Title 18)
• Overlay framework—purpose, creation, mapping: **§ 18.76.010–18.76.040**. (§ 18.76.010)
• Scenic Highway Overlayed District—uses, signs, structure location/height/lot/parking: **§ 18.80.010–18.80.050**. (§ 18.80.010)
• Manufactured Housing Architectural Review Overlayed District—standards and subdivisions: **§ 18.84.010**, **§ 18.84.060**. (§ 18.84.010)
• Airport/Airspace Overlayed District—use/height/location limits: **§ 18.78.010–18.78.030**. (§ 18.78.010)
• Zoning permit conditions; architectural/landscape compatibility: **§ 18.104.040–18.104.050**. (§ 18.104.040)
• Variances—purpose, findings, process: **§ 18.106.010–18.106.050**. (§ 18.106.010)
• Base compliance with overlay regulations and other standards: **§ 18.02.040(C)**. (§ 18.02.040)
• State ADU guidance on historic resources (summary reference): 2025 HCD Handbook.
• MaderaCounty_ZoningCode.md
• 2025 California ADU handbook.md

• Official Madera County code library